I was checking out the Pirelli website (see link below) to find the manufacturer's recommended tire pressure for the new set of Sport Demons I installed for this season. The website gave the following info for a 1995 GS500:
SPORT DEMON
Front
100/90 - 19 M/C 57V TL SPORT DEMON Front - 1.9 BAR (28 psi)
Rear
120/90 - 18 M/C 65V TL SPORT DEMON - 2.3 BAR (34 psi)
note: psi conversion values added for convenience
Why are the recommended sizes so far off of the manufacturer's specifications? In particular, how can they specify 19" and 18" tire sizes?! :cookoo:
Also, the pressure values seem low to me. Although I don't trust them much because the tire sizes are so strange.
Do you guys get the same specs if you look up your bikes?
http://www.pirellityre.com/web/fitment/selectSearchTyresForm.do?mySelectActived=confirm&myEntryPoint=%2Ffitment%2FhomeMotoFull&brandVehicle=4623&modelVehicle=103732&versionVehicle=202421&consent=Y (http://www.pirellityre.com/web/fitment/selectSearchTyresForm.do?mySelectActived=confirm&myEntryPoint=%2Ffitment%2FhomeMotoFull&brandVehicle=4623&modelVehicle=103732&versionVehicle=202421&consent=Y)
Yea their specs are off.Sounds like specs for a GS550E.You can't fit an 18 or 19 inch tire on a 17 inch wheel.Stock sizes for GS500 are 110-70-17 and 130-70-17 and PSI is 33F/36R solo.When I buy tires I look at size and rating.I don't look up a specific bike,but I don't run stock size tires either.
That's Pirelli homesite, go to US site and check:
http://www.us.pirelli.com/web/motorcycle/default.page
click on GS500 E,EU 1989-2000 and the GM 51 model will come up. We have GM51 models here, look at your serial number on title/registration.
Front Rear
110/70 - 17 M/C 54H TL SPORT DEMON Front - 2.25 BAR 130/70 - 17 M/C 62H TL SPORT DEMON - 2.8 BAR
My paper copies I pick up at CW bike show have right data also.
32 psi front 36 psi rear
I've run into that before at Avon site, they show a 84-88 GS500 with the 19" front and 18" rear wheels. I'm not sure what they are exactly.
Thanks to all for the clarifications
Quote from: gsJack on April 04, 2008, 04:37:52 PM
Front Rear
110/70 - 17 M/C 54H TL SPORT DEMON Front - 2.25 BAR 130/70 - 17 M/C 62H TL SPORT DEMON - 2.8 BAR
My paper copies I pick up at CW bike show have right data also.
32 psi front 36 psi rear
Hi gsjack, I get 2.25 bar = 32.6 ~ 33 psi and 2.8 bar = 40.6 ~ 41 psi
Is 36 psi from the paper specs you have?
Yes, the 32/36 psi is from the paper copy and is about same as my 97 GS500E Owner's Manual which shows 33/36 for solo riding and 33/41 for two-up riding. My 02 GS shows the same on label on bike.
I use this chart from Metzeler for general reference and it's about the same also:
(http://img.photobucket.com/albums/v443/jcp8832/MetzPSI.jpg)
THis is a question about my Little town run able , The 70cc
i have 140/50 on the front and rear , due to the 14 inch rims , There Pirelli Demons
Now i check my tire pressiure the other day on the rear , and i got 11 psi , i was shocked !!
I ussually run 36 rear , and 28 front , due to the bike weighing 15 stone and me being nearly 14 stone
Could i safely run it even further?
Thanks Day
I have Avon Azarro ST AV45/AV46 and I run as per Suzuki, 33 front 36 rear when alone 33 front 41 rear when 2-up.
never had an issue.
cheers.
Right im checking my tired and losing around 10 psi a day , is it a slow punchure , theres not leaks as i can tell
Quote from: Jay_wolf on April 23, 2008, 04:40:08 PM
Right im checking my tired and losing around 10 psi a day , is it a slow punchure , theres not leaks as i can tell
if you had a puncture you probably would see it, I bet its a bead edge leak, I would get the tire pulled from bike, dipped in water I bets it leaking from the rim edge with tire.
if that is the case re-seat the tire bead again.
I would not ride on a slow-leaking tire, 10lbs a day is not a slow leak, 1lbs a day is a slow leak, 10lbs a day is 1/3 of pressure, forget to check one day, and you place yourself in a possible situation where the poorly pressured tire can cause an accident, I know I am preaching to the choir, but I would get that fixed asap.
Cheers Mate
No, Thank you very much , thats exactly what i thought it would have been . once i saw no puncture ,
Thanks for worry bout me to , :)
Cheers Buddy